Rendering

Rendering packed primitives:

if the packed object has multiple material assignments use DECLARE ALL SHOPS in the mantraNode/rendering/render to make them get assigned

Arnold uses something called LPE(Light path expression) to set AOVs

Using those expressions we can seperate the AOVs per light group basis.

#set some name AOV Light group parameter in the arnold light

#create AOV in arnold render node

#set the LPE to get desired results.

Example:

beauty per lightgroup - C.*<L.'lightgroupname'>

Here are the available expressions